Electric circuit switch



FIG. 1 is a front view of an electric circuit switch, showing our new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a left side view thereof; and,

FIG. 7 is a top, front and right side perspective view thereof.

The broken lines in the drawings illustrate portions of the electric circuit switch that form no part of the claimed design. 

CLAIM The ornamental design for an electric circuit switch, as shown and described. 